General

Engineer's Note

Designed for server environments, this 32 GB DDR4-2133 Registered DIMM with ECC and Quad Rank x4 organization delivers high memory capacity per channel and ensures data integrity for demanding workloads such as virtualization and in-memory databases. Its Registered signal type and CL15 latency provide stable operation under heavy loads while the 1.2 V operating voltage balances energy efficiency with reliable, error-corrected performance.

Technical Specs & Insights

1. A dense DRAM capacity per module maximizes virtualization density, allowing a single server to host significantly more virtual machines without sacrificing performance.
2. Integrated ECC continuously corrects single-bit memory errors, safeguarding transactional databases and in-memory analytics from silent data corruption.
3. The registered signal architecture buffers command and address lines, ensuring rock-solid stability when populating all DIMM slots in a scaled-up enterprise server.
4. Quad Rank x4 organization enables deep memory interleaving, boosting effective bandwidth for memory-bound workloads like large-scale virtualization and real-time data processing.
5. Operating at a reliable 2133 MT/s, this frequency floor guarantees consistent performance across all installed modules, a priority in environments where uptime and predictability outweigh peak burst speed.

Why These Specs Matter

The M386A4G40DM0-CPB0QE is a DDR4-2133 Registered DIMM built for the server environment, where every component decision directly impacts business continuity and total cost of ownership. Its ECC technology is non-negotiable when you run memory-intensive databases like SAP HANA or large-scale virtualization clusters: a single-bit error in financial transaction logs or hypervisor memory can corrupt data silently, and ECC hard-stops that risk before it cascades into audit failures or VM crashes. The registered signal buffer is what transforms this 32GB module from a paper specification into a predictable asset. In a dual-socket server packed with 24 DIMM slots, unbuffered designs would overwhelm the memory controller with electrical loading; the registered architecture cleanly redistributes command signals, allowing you to populate all channels without sacrificing speed—this is why you can confidently scale your VMware ESXi farm to hundreds of VMs on one node. The quad-rank x4 organization and 15 CAS latency further strengthen this capability, delivering dense capacity and steady bandwidth for in-memory analytic workloads where milliseconds define the user experience. And at 1.2V, the module drives down power consumption across a fleet, shrinking cooling overhead in colocation cages while maintaining compliance with RoHS and WEEE standards—a detail that moves the needle when your datacenter runs 24/7. This memory turns server density into a measurable reliability advantage.

Endurance & Reliability

This Samsung M386A4G40DM0-CPB0QE is a server-grade 32GB DDR4-2133 Registered ECC DIMM (quad-rank x4, CL15). Its ECC and registered design makes it suitable only for servers and workstations that require data integrity and high module density. Below are capacity planning recommendations for typical enterprise workloads.

General Virtualization
In a dual-socket virtualization host, populate eight of these 32GB modules (256GB total) evenly across memory channels to balance capacity and bandwidth. This configuration comfortably supports 20–30 moderate virtual machines and leaves room for future expansion.

In-Memory Database
For memory-constrained databases like Redis or SAP HANA, maximize capacity per socket. Install 12 modules per server (384GB) using all available DIMM slots while adhering to the platform’s rank limits. Quad-rank modules may reduce maximum supported speed; verify the server matrix, but capacity density often outweighs minor frequency drops.

High-Performance Computing
HPC clusters value bandwidth over raw capacity. Deploy one 32GB DIMM per channel (eight modules total) to maintain 2133MT/s speed and avoid rank-induced clock penalties. Pair this with a matching second CPU and identical modules for symmetric memory access, ensuring consistent latency across compute nodes.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R730, R630, HPE DL380 Gen9, and more.

FAQ